When we were doing solar water heating projects, at the beginning of the design, there were many technical requirements for solar water heating engineering systems to be noticed. For the principle of solar water heating engineering system, in general, the solar water heating engineering system is a hot water supply system that uses the "greenhouse effect" principle to convert solar radiant energy into heat energy and transfer heat to the working medium to obtain hot water. . The solar water heating engineering system consists of solar water heater engineering collectors, hot water storage tanks, pumps, circulation pipes, auxiliary heat sources, control systems and related accessories.

Civil building solar water heating engineering system and its selected components must comply with the relevant national product standards, must have product certification and installation instructions; there should be a performance test report and certificate issued by the state authorized quality inspection agency. In design, solar water heating engineering systems and component products that have passed product certification should be preferred.

The solar water heating engineering system should meet the principles of safety, application, economy and aesthetics, and should be easy to install, clean, maintain and partially replace.

In the solar water heating engineering system, auxiliary energy heating equipment should be arranged.

The solar water heater storage tank with a hot water tank capacity of less than 600L is called “home solar water heating engineering system”, and the national standard GB/T19141—2003 “Technical conditions for domestic solar water heating system” for its manufacturing quality and The performance requirements are stipulated; the large-scale solar water heating engineering system with a storage tank volume of more than 600L, the corresponding national standard is currently being compiled, but its composition and the domestic solar water heating engineering system are not fundamentally different, just The amount of water is large. Therefore, this manual refers to GB/T19141-2003 and related building codes, and proposes a unified technical requirement for the solar water heating engineering system and its components.